JPH07505584A - pen - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] FIELD OF THE INVENTION The present invention relates to writing instruments, and more particularly to pens.

A barrel surrounding the ink reservoir, a nib, and a barrel located below the nib that removes the nib from the reservoir. An ink located on the underside of the nib for supplying ink from the storage chamber to the underside of the nib. closing a supply bar forming an ink supply passage and an ink supply passage coupled to the nib; When you apply the nib against the surface of the writing paper, the ink can flow to the nib. It has been proposed to produce a storage pen with a valve that is opened in the same way. valve The advantage is that it prevents the ink from drying in the supply passage when the pen is not in use. It is to be.

However, as far as is known, such pens are not available on the market. The main reason for this is that when the valve opens, the ink from the reservoir It is believed that this is due to the difficulty in controlling the flow of 3g! 2 Supply passageways and/or valves must be made to close tolerances to achieve consistent ink flow. and cannot be manufactured economically using today's manufacturing methods.

The present invention aims to solve the above-mentioned problems, and according to the present invention, A first ink reservoir, a second ink reservoir, a nib, and a second ink reservoir. an ink supply passage that introduces ink to the nib through the nib operating valve; The flow of ink from the storage chamber to the second storage chamber, which causes the ink to flow when the valve opens. a fluid restriction device for regulating the flow of ink to the pen. .

In the pen of the present invention, the ink flow rate is controlled by a suitable fluid restriction device within the reservoir structure. is conveniently controlled by having an ink supply path and/or There is no need to operate the fluid adjustment from the valve or the valve, which makes it easy to This eliminates the tight tolerances imposed on these components. fluid restriction device Can the ink be passed through or through at a controlled maximum speed? It may be a device, member, or element.

The essence of a microporous material made of a certain length cut from extruded plasti Satisfactory results are obtained with the plastic - the plastic has a capillary tube extending along its length. It has a passageway.

Made of materials similar to those used for porous writing tips on other writing instruments. Thus, the fluid resistance can be easily adjusted by taking longer or shorter lengths.

The second ink reservoir is much larger than the first reservoir where substantially the majority of the ink is contained. The second reservoir is of small volume and contains the amount of liquid that immediately forms when the valve is opened. supplying ink to the valve or nib to enable scales.

In traditional fountain pens, air enters the ink reservoir and as the ink is used Replaces ink. Due to changes in temperature and/or atmospheric pressure (e.g. inside an airplane) air in the storage chamber expands and may displace ink. child The disadvantage of Due to the fact that the volume is made to decrease as the ink is used . This eliminates the need for air to enter the reservoir and the reservoir is closed for ink filling means to leave the device behind. Reducible volume storage chambers are different like flexible bags. Although the preferred embodiment has a cylindrical body and the ink is a grease plug that slides along the body as the ink flows.

According to a novel feature of the invention, the grease plug is assembled into a reinforcing frame of rigid material. It is taken care of. Frame with skeletal structure forms a wide contact area with grease and are sized to fit freely within the storage chamber body, so that their The intervening grease layer maintains the integrity of the grease mass, especially in large diameter reservoir bodies. I found that it helped me hold on. The frame is a grease that leads to oxidation and drying of the grease. Acts to limit contact between the grease and the atmosphere which impairs the performance of the lease plug do. In one particular construction the frame has several radii, e.g. With the fins in the direction, open the frame at the rear end of the fins to grease the container and insert it into the container. and a transverse disc provided with a mouth.

The reinforcing frame is suitable for large diameter bodies and large volume storage chambers, and the main body is meaning that it may be shaped by the barrel itself. The ink in the storage room is empty. So-called disposable pens, which can be thrown away when I'm going to growl.

The present invention provides a new valve structure for a pen. The valve seat is the nib It is formed in the supply bar disposed below and surrounds the opening of the ink supply passage.

The valve member is a softer material than the seat material to ensure a good sealing engagement The flow of ink through the open valve is assisted by the pulling force of the capillary tube. The ink duct, which decreases in width toward the downstream direction, is drawn along with the sheet. The shape is such that the Furthermore, the valve member protrudes into the ink supply passage and the valve member protrudes into the ink supply passage. When the nib is opened, it draws ink through the passageway and the first drop of ink is drawn into the writing tip of the nib. Contains parts that assist in the supply of The valve member is in the form of a plug, and the plug is attached to the nib. It passes through the hole and is pushed into the closed position by a spring member acting at its outer end. General The valve plug opens the valve by movement of the nib under normal writing pressure. movement of the nib is stopped by a stop means provided thereon which engages an abutment on the feed bar. Therefore, it is limited.

The above-mentioned and preferred features of the invention relate to some specific embodiments and Further details will be explained with reference to the accompanying drawings.

FIG. 1 is an axial cross-sectional view of a pen made in accordance with the present invention.

FIG. 2 is an enlarged cross-sectional view of the feed bar and nib assembly.

3 is a plan view of the assembly shown in FIG. 2; FIG.

FIG. 4 is a front end view shown in FIG. 2.

FIG. 5 is a detailed sectional view of the valve. - Figure 6 shows the side of the grease plug frame. It is a diagram.

FIG. 7 is a top view of the grease plug frame.

FIG. 8 is a bottom view of the grease plug frame.

FIG. 9 is a cross-sectional view taken along line A--A in FIG. 8.

Figures 10 to 13 are grease plugs corresponding to Figures 6 to 10, respectively. 2 is a drawing showing another structure of.

FIG. 14 is a side view of a modification of the present invention.

FIG. 15 is an axial cross-sectional view of the front end of the pen of FIG. 14;

FIG. 16 is an axial cross-sectional view of the rear end portion of FIG. 14.

The pens shown in Figures 1 to 9 of the drawings are filled with ink that has become empty. After that, it is about to be abandoned.

As will become clear, the pen has a cylindrical barrel 1 forming a first storage chamber 2. , a supply attached to the front end of the barrel 1 and to which the nib 4 of the pen is attached. bar 3 and housed at the rear end of the barrel, just behind the column of ink housed in chamber 2. and a grease plug 5.

The feed bar has an axial hole, the hole is stepped to form three main parts. three parts are provided, namely a large diameter rear part forming a first storage chamber; , a middle part and a front part forming the second ink reservoir 6 . fluid restriction A device is housed in a large area in the middle and separates the first storage chamber from the second storage chamber, and The body restriction device has a plastic extruded rod 8, which 8, with one or more capillaries extending longitudinally through the tube. flow system The limiting device further includes a cylindrical holder 9 that supports a rod in the supply bar, and which holds the ink. is supplied from the first storage chamber to the second storage chamber - to restrict the flow. ing. The fluid resistance created by the restriction device is determined by the length of the rod and its Therefore, it can be adjusted by using long or short rods. room 6 is very small, much smaller than the volume of the first storage chamber.

An ink supply passage 10 leads ink from the second reservoir to the upper side of the supply bar and is connected to the annular bar. The valve seat 11 cooperates with a valve member 12 formed by a plug 13. extends around. The plug extends through the hole provided in nib 4 and is attached to the top of the nib. The tip of the writing part of the nib is pressed onto a piece of paper during writing. By being basted, the nib separates from the supply bar, the plug 13 rises, and the valve The valve member 12 is separated from the valve seat 11 to prevent ink from flowing from the supply passage 10. enable. The inner end of the plug is inserted into the piston 15 to facilitate the initial ink flow. The piston 15 acts like a pump when the plug 13 rises. This acts to cause ink to flow outside the supply passage. Further promotes ink flow In order to An annular shape that becomes narrower as it moves away from the seat, cooperating with a partially spherical socket. forming an ink conduit or passageway 16 (FIG. 5) so that capillary forces are directed away from the ink passageway. Pull out the ink.

The supply bar 3 and valve seat are made of a relatively hard material such as polycarbonate. However, the plug 13 is made of soft material, e.g. High-density polyester that provides a good seal between the valve member and seat Made from ethylene.

The outer surface of the supply bar has a longitudinal length extending from the socket towards the free end of the supply bar. A direction i@18 is provided. This groove is inclined in the depth and width direction. This forms a capillary tube that helps ink flow to the tip of the writing part of the nib 4. nib is a slit that extends from its tip to the hole in which the plug 13 is inserted; The cut forms the final point of the ink flow path to the tip of the writing section. The rear end of the nib is supplied Supported by a slightly raised shoulder formed in the bar, the nib is also influenced by a leaf spring. The front end of the leaf spring rests on top of the supply bar. Thus between the nib and the supply bar A gap is formed in the gap, and the gap opens in such a way that it promotes flow in that direction by capillary action. It's slanted towards. Hole 2 in the nib in the feed bar to hold the nib in place An angled projection 23 is provided which engages with 4. At the back end of the nib, the side of the nib is bent to form an L-shaped protrusion providing a stop 24, the stop 24 being located below laterally extending abutment shoulders 25 provided on both sides of the bar (fourth figure). The stop 24 engages the shoulder 25 and provides the supply bar necessary to open the valve. restricts the movement of the nib away from the supply passageway 10 and prevents essential flow of ink out of the supply passageway 10. enable. In this connection, the valve is required to adjust the velocity of the ink flow. This action is carried out by the rod 8 of the fluid restriction device, which is not necessary, but the Ml a second reservoir by restricting the flow of replenishment ink from the reservoir to this reservoir; Adjust the flow of ink out of the chamber. The second leaf spring 28 is the head of the plug 13 Acting at 14 to push the valve member into a closed condition. The plug is fixed to the nib but preferably separated for ease of manufacture and actuated by each spring 21.28. be done. The spring is nevertheless provided with an integral spring component 30; The component 30 has a collar 32 that surrounds the supply bar and from which spring 2 is connected. 8 protrudes, and the spring 21 is stamped on the outside of this finger. It is formed by a curved central part. The empty part 32 accepts the positioning point 33 cutout to ensure precise rotational positioning of the spring on the feed bar .

The grease plug 5 consists of a lump of grease material and a reinforcing frame as shown in Figures 6 to 9. Consists of a room or cage.

The cage consists of a central hub 40 with a point at the tip; Projecting are four radial fins 41 equally spaced around the circumference. last At the end of the fin 41 is a circular disc 42 with a hole 43. It is consistent with the space between. After filling pen barrel 1 with ink, a lump of grease is introduced into contact with the surface of the ink. Next, the disk 42 is coated with grease. The outer surface is covered and the cage is inserted into the grease so that it is completely submerged in the grease. . Hole 43 facilitates insertion by allowing trapped air to escape Make it. The outer diameter of the cage is smaller than the inner diameter of the barrel, preferably Allow a layer of grease between the barrels on the order of at least 0.1 g stirrup thickness It is small by the amount that it is. In addition, a reinforcing case is installed to prevent the grease plug from disassembling. It is preferred that there is a solid blob of grease extending forward from the front edge of the Delicious.

The grease plug runs along the barrel as the ink in the first reservoir 2 is used. Slide forward and maintain contact with the ink. The cage is made of a thin layer adjacent to the storage wall. Reduces shear forces within the grease boundary by limiting shear forces into the grease The integrity of the grease blob is due to the larger diameter of the barrel and the ink used in the pen. remains intact despite its watery low viscosity. The disc 42 of the cage is If the grease is placed over the surface of the grease, it reduces the contact of the grease with the atmosphere, due to drying or oxidation, which has a detrimental effect on the ability of the grease to follow the movement of the ink. Hardening or softening of the grease is essentially prevented.

The area of contact is mainly limited to the holes (in extreme cases they are gridded with the cage). is filled after filling the base.

- necessary for the ink in the first reservoir 2 when the ink flows out of the pen device; is a grease plug that itself has the effect of limiting the speed of ink flow. This means pulling the rod along the rear. Flow restriction devices provide resistance to obtain the required flow rate. It is designed to tolerate resistance.

Other configurations of the grease plug for reinforcing the cage are shown in FIGS. 10 to 12. No. It has almost the same configuration as the cage shown in Figures 6 to 9, with four equally spaced fins. 51 and a circular disk 52 at the upper end.

The cage has a central hole 53 extending through the disc 52, thereby allowing the first fruit to Serves the same purpose as holes 43 in the example, extending along the fins but at their free lower ends. It almost ends. The holes are of sufficient diameter to allow direct communication between the fins. and that the grease segments filling the space are connected directly through the cage. and helps maintain the integrity of the grease plug. Bottom corner of the fin Also include a grease plug to help guide the cage along the reservoir body. radially shaped to encourage air bubbles to escape from between the storage chamber and the storage chamber. .

Also on the bottom edge of the fin to facilitate the passage of air bubbles and minimize friction. The radial width of the fins is reduced. Extends the air escape path through the disc. A notch 54 is formed in the disc 52 for the purpose of making the disc 52 easier. Making a grease plug The purpose and use are the same as described with respect to FIGS. 6 to 9.

A second embodiment of a pen according to the invention is shown in FIGS. 14-16. pen Most of the drawings are essentially the same as those in FIGS. 1 to 5, and there are The same reference numerals have been used to indicate the corresponding parts. The front of the pen or the writing tip of the pen The main difference is the addition of a shroud member 60, and the shroud member 60 is , serves to secure the spring component 30 in place on the feed bar 30, and acts to hide the spring 21,28 and the valve plug 13, thereby The overall appearance of the writing instrument tip is enhanced. The shroud member is It abuts against the bolt 62 that snaps into the front end of the pen barrel 1, and inside the barrel. It is held against a formed internal shoulder, thereby allowing the feed bar to be placed inside the barrel. hold. The finger portion 63 integrated with the shroud member projects forward from the collar 61. It covers the spring 21, 28 and the valve plug 23. In the first embodiment The spring component 3o has a tail 64, while the spring component 3o has a tail 64. 4 is bent around the trailing edge of the shroud member and is provided on the outer surface of the collar 61. located in a longitudinal groove. Thus, the spring tail 64 is connected to the shroud. The spring component is firmly secured between member 60 and barrel 1 to keep it in place. firmly fixed.

If you now turn your attention to the rear end of the pen, the rear end of the barrel will be fully open as shown in Figure 1. It is preferable not to leave it unattended. In the pens shown in Figures 14 to 16, the barre A closing member is provided at the rear end of barrel 1, the closing member being adapted to fit tightly into the end of the barrel. It has the shape of a plug 65 that is pushed. As the ink in the storage room is used, is created behind the grease plug when the grease plug 5 moves forward. Necessary measures will be taken to prevent a vacuum from forming.

Because the vacuum will interfere with this movement of the plug and maybe cause the grease plug to disassemble. Because it guides you. A vent is provided for this purpose, which vent is located in barrel 1. A longitudinal groove 66 running along the inside and a plug 65 form an air port. It is formed from a notch 67 at the end of the barrel. Grid as shown in Figure 16. The cage reinforcing the grease plug 5 is completely embedded in the grease.

Air and grease by restricted communication with the outside atmosphere through narrow vent means contact is minimal and therefore any adverse effects on the grease are acceptable. Reduced to Bell. The supply bar 3 and shroud member 6o are supported thereby. The first storage chamber 2 is then assembled with the barrel 1 along with the other parts that will be installed. The grease plug 5 and the stabilizing cage are introduced, and finally the plug is filled with 65 is fitted. A pen is discarded when all ink is consumed. too Of course, the pen may instead have an ink cartridge or other that allows for refilling. However, if it is filled from the tip of the writing instrument, the valve may be bypassing or opening the valve) is unacceptable during the filling operation. allows ink to flow into the first reservoir 2 bypassing the fluid restriction device 8 at a rate of It is necessary to take measures to

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Claims (12)

[Claims] 1. a first ink reservoir, a second ink reservoir, a nib, and a second ink reservoir an ink supply passage that introduces ink from the chamber to the nib through the nib actuation valve; The flow of ink from the second ink reservoir to the second ink reservoir is thereby controlled. a fluid restriction device that regulates the flow of ink into the nib when the nib is opened; A pen featuring 2. Note that the ink supply passage is formed by the supply bar on the underside of the nib. A pen according to claim 1, characterized in that: 3. Claim characterized in that the second ink reservoir is formed in the supply bar. The pen described in 2. 4. 2. The fluid restriction device according to claim 1, wherein the fluid restriction device comprises an element having micropores. The pen according to any one of 3. 5. The fluid restriction device includes a holder separating the second ink reservoir from the first ink reservoir. claim characterized in that it is a long element supported by a feeding bar by The pen described in item 4. 6. The valve has a seat formed by a supply bar and a spring means that connects the seat to the seat. 3. The pen of claim 2, further comprising a biased valve member. 7. The valve member is a piston configured to extend into the supply passage through the valve seat. 7. The pen according to claim 6, further comprising a tongue portion. 8. The valve member extends through the hole in the nib and closes the valve when the nib is deflected from the feed bar. Having an enlarged head for the nib that raises the lub member and opens the valve. The pen according to claim 6 or 7, characterized by: 9. a shroud member overlies and covers the spring means; A door member is connected to the barrel and engages the feed bar to secure the feed bar to the barrel. A pen according to any one of claims 6 to 8, characterized in that the pen is fitted with a matching pen. 10. The supply bar surface on the underside of the nib extends forward from the ink supply passageway and The cross section is tapered to feed the ink towards the writing point on the board. 3. The pen according to claim 2, wherein the pen has a characteristic. 11. The first reservoir is formed by the barrel of the pen, containing the grease mass and the skeletal structure. It is characterized by a reinforced frame closed by a grease plug. A pen according to any one of the above claims. 12. Claim 1, wherein the frame has a plurality of spaced fins. The pen described in 1.